Registering DLL components

Hello Everyone,

I have some questions to do with registration of DLLs and OCX files in Installshield. I have some fairly serious gaps in my knowledge and was hoping someone could help fill in the gaps.

If some components within a feature are not selected as 'self-registration' do any of the DLLs and OCX files get registered? Is it necessary to build your own custom action to perform the registration process? Also, if the DLLs and OCX files are some how registered without a custom action, how would you change the order of registration? I am concerned that a component which uses another component is being registered before its dependent component is registered and so think I may need the freedom to change the order of registration. How would this apply for self-registering DLLs? How do I check if registration of a component was successful?

Any links to tutorials, guides or references would be useful.

Thanks,
CoolSwarvy